Coating extrusion head, coating device and battery production system

Abstract

The application relates to a coating extrusion head, a coating device and a battery production system. The coating extrusion head comprises a coating head body, a fixing hole, a fixing part arranged on one side of the coating head body, a threaded sleeve fixed in the fixing hole, the threaded sleeve comprising a first sleeve and a second sleeve, the first sleeve and the second sleeve being arranged in sequence along the depth direction of the fixing hole, the end face of the first sleeve towards the second sleeve being provided with a first wedge cam, the end face of the second sleeve towards the first sleeve being provided with a second wedge cam, the first wedge cam and the second wedge cam being mutually engaged, and a connecting part, the connecting part being arranged through the fixing part and being threadedly connected with the first sleeve and the second sleeve to fix the fixing part and the coating head body. Through the design of the threaded sleeve, the direct damage to the coating head body is reduced, the first sleeve and the second sleeve are limited by the engagement relationship between the wedge cams, the risk of the first sleeve and the second sleeve being separated from the fixing hole is reduced, and the reliability of the connection is improved.

Description

Technical Field

[0001] This application relates to the field of battery coating technology, and in particular to a coating extrusion head, coating device and battery production system. Background Technology

[0002] The statements herein are provided only as background information in connection with this application and do not necessarily constitute prior art.

[0003] In battery production, the coating of wet film slurry is usually achieved through a coating extrusion head. However, during the adjustment of the offset of the double-layer coating extrusion head or the adjustment of the gap between the coating extrusion head and the coating back roller, the screw that plays a fixing role is prone to loosening of the fit between it and the threaded hole of the coating extrusion head. Utility Model Content

[0004] In view of the problem, this application provides a coating extrusion head, a coating apparatus and a battery production system, which can alleviate the problem of loose fit between the screw that plays a fixing role and the threaded hole of the coating extrusion head.

[0005] In a first aspect, this application provides a coating extrusion head, comprising:

[0006] The coating head body has a fixing hole;

[0007] A fastener is located on one side of the coating head body;

[0008] A threaded sleeve is fixed in a fixing hole. The threaded sleeve includes a first sleeve and a second sleeve, which are arranged sequentially along the depth direction of the fixing hole. The end face of the first sleeve facing the second sleeve has a first wedge-shaped cam, and the end face of the second sleeve facing the first sleeve has a second wedge-shaped cam. The first wedge-shaped cam and the second wedge-shaped cam mesh with each other.

[0009] And a connector, which passes through the fixing member and is threadedly connected to the first and second dental sleeves to fix the fixing member to the coating head body.

[0010] The aforementioned coating extrusion head, because the connector is threadedly connected to the threaded sleeve fixed in the fixing hole of the coating head body, does not directly form a threaded connection with the fixing hole of the coating head body, thus reducing direct damage to the coating head body. Furthermore, because the first and second sleeves have a first wedge-shaped cam and a second wedge-shaped cam that mesh with each other, during the threaded connection or disassembly of the connector with the first and second sleeves, the first and second sleeves are restricted by the meshing relationship between the wedge-shaped cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first and second sleeves dislodging from the fixing hole is reduced, and the fixing reliability of the first and second sleeves in the fixing hole is improved, thereby improving the reliability of the threaded connection between the connector and the first and second sleeves, and making the connection between the fixing member and the coating head body reliable.

[0011] In some embodiments, the first wedge cam includes a plurality of first wedge cams, all of which are arranged around the axis of the first dental brace; the second wedge cam includes a plurality of second wedge cams, all of which are arranged around the axis of the second dental brace.

[0012] All the first wedge cams are matched one-to-one with all the second wedge cams.

[0013] Thus, since multiple first wedge cams correspond one-to-one with each other to achieve mutual engagement, the risk of the first and second threaded sleeves disengaging from the fixing hole is further reduced, and the fixing reliability of the first and second threaded sleeves in the fixing hole is improved, thereby improving the reliability of the threaded connection between the connector and the first and second threaded sleeves.

[0014] In some embodiments, the cross-sectional shape of both the first wedge cam and the second wedge cam is triangular.

[0015] The triangular structure is more stable, and when the first and second wedge cams mesh, the mating surfaces between them have higher precision and greater constraint, generating a larger biting force and enhancing their connection strength. When the first and second dental braces are subjected to external forces, this triangular cross-sectional shape can more effectively resist the tendency to separate, thus further consolidating their position in the fixing hole. Furthermore, the triangular cross-sectional shape is easier to process and manufacture, reducing production costs and improving the precision and reliability of the components.

[0016] In some embodiments, the space between the first and second dental braces and the inner wall of the fixing hole is filled with fixing adhesive.

[0017] After the adhesive has cured, it can improve the connection strength between the first and second dental sleeves and the inner wall of the fixing hole, making it less likely for the first and second dental sleeves to loosen or fall off.

[0018] In some embodiments, the outer peripheral surface of the first dental sleeve has a first external thread, and the first dental sleeve is threadedly connected to the inner wall of the fixing hole through the first external thread;

[0019] The outer peripheral surface of the second dental sleeve has a second external thread, and the second dental sleeve is threadedly connected to the inner wall of the fixing hole through the second external thread.

[0020] Thus, when the space between the first dental sleeve and the inner wall of the fixing hole is filled with adhesive, the outer peripheral surface of the first dental sleeve, having a first external thread and being threadedly connected to the inner wall of the fixing hole through this thread, increases the contact area with the adhesive, further enhancing the connection strength between the first dental sleeve and the inner wall of the fixing hole, making the first dental sleeve less prone to loosening or falling off. Similarly, when the space between the second dental sleeve and the inner wall of the fixing hole is filled with adhesive, the outer peripheral surface of the second dental sleeve, having a second external thread and being threadedly connected to the inner wall of the fixing hole through this thread, increases the contact area with the adhesive, further enhancing the connection strength between the second dental sleeve and the inner wall of the fixing hole, making the second dental sleeve less prone to loosening or falling off.

[0021] In some embodiments, the direction of rotation of the first external thread is opposite to the direction of rotation of the internal thread of the first toothed sleeve;

[0022] And / or the direction of rotation of the second external thread is opposite to the direction of rotation of the internal thread of the second toothed sleeve.

[0023] Thus, when the connector is unscrewed outward to disassemble from the first threaded sleeve, because the direction of the first external thread is opposite to the direction of the internal thread of the first threaded sleeve, the force acting on the outer circumferential surface of the first threaded sleeve is opposite to the outward screwing force, making the first threaded sleeve less likely to come off and reducing the risk of it loosening or falling off during disassembly. Similarly, when the connector is unscrewed outward to disassemble from the second threaded sleeve, because the direction of the second external thread is opposite to the direction of the internal thread of the second threaded sleeve, the force acting on the outer circumferential surface of the second threaded sleeve is opposite to the outward screwing force, making the second threaded sleeve less likely to come off and reducing the risk of it loosening or falling off during disassembly.

[0024] In some embodiments, one end of the fixing hole forms an inlet on the coating head body, the first dental sleeve is positioned closer to the inlet than the second dental sleeve, and the end face of the first dental sleeve away from the second dental sleeve is provided with a disassembly groove.

[0025] The removal slot allows users to apply force to the first dental aligner by inserting a tool into it. Since the first and second dental aligners interlock, they can be screwed out of the fixing hole together, making it easy to remove or replace the first dental aligner.

[0026] In some embodiments, the disassembly slot is hexagonal, straight, or cross-shaped.

[0027] This design allows for easy adaptation to tools of different shapes for disassembly operations. Furthermore, this shape not only improves the ease of disassembly but also enhances the stability and reliability of the disassembly process.

[0028] In some embodiments, the fastener includes a base, and the coating head body is fixed to the base by a connector.

[0029] Since the connector is threadedly connected to the threaded sleeve fixed in the fixing hole of the coating head body, there is no direct threaded connection between the connector and the fixing hole of the coating head body, thus reducing direct damage to the coating head body. Furthermore, since the first and second sleeves have interlocking first and second wedge cams, during the threaded connection or disassembly of the connector and the first and second sleeves, the first and second sleeves are restricted by the interlocking relationship between the wedge cams, and they cannot easily undergo axial relative displacement. Therefore, the risk of the first and second sleeves dislodging from the fixing hole is reduced, and the fixing reliability of the first and second sleeves in the fixing hole is improved. This improves the reliability of the threaded connection between the connector and the first and second sleeves, and the connection between the base and the coating head body is reliable.

[0030] In some embodiments, the coating head body includes a first coating head body and a second coating head body, and a material passage gap is formed between the first coating head body and the second coating head body.

[0031] Both the first coating head body and the second coating head body have at least one fixing hole. The threaded sleeve includes at least two, each threaded sleeve being fixed in a corresponding fixing hole. The connector includes at least two, each connector passing through a corresponding fixing member and threadedly connected to the first and second threaded sleeves of the corresponding threaded sleeve.

[0032] Since the connector is threadedly connected to the threaded sleeve fixed in the fixing hole of the first coating head body or the second coating head body, there is no direct threaded connection between the connector and the fixing hole of the first coating head body or the second coating head body. Therefore, direct damage to the first coating head body or the second coating head body is reduced. Furthermore, since the first and second sleeves have a first wedge cam and a second wedge cam that mesh with each other, during the threaded connection or disassembly of the connector and the first and second sleeves, the first and second sleeves are restricted by the meshing relationship between the wedge cams and cannot easily undergo axial relative displacement. Therefore, the risk of the first and second sleeves dislodging from the fixing hole is reduced, and the fixing reliability of the first and second sleeves in the fixing hole is improved. This improves the reliability of the threaded connection between the connector and the first and second sleeves, and the connection between the fixing member and the first and second coating head bodies is reliable.

[0033] In some embodiments, the coating head body includes a first coating head body, a second coating head body, and a third coating head body, and material passage gaps are formed between the first coating head body and the second coating head body, and between the second coating head body and the third coating head body.

[0034] The fasteners include at least two, wherein at least one fastener is used to fasten the first coating head body and the second coating head body, and the remaining fasteners are used to fasten the second coating head body and the third coating head body;

[0035] The first coating head body, the second coating head body, and the third coating head body each have at least one fixing hole. The threaded sleeves include at least four, each threaded sleeve being fixed in a corresponding fixing hole. The connectors include at least four, each connector passing through a corresponding fixing member and threadedly connected to the first and second threaded sleeves of the corresponding threaded sleeve.

[0036] Since the connector is threadedly connected to the threaded sleeve fixed in the fixing hole of the first coating head body, the second coating head body, or the third coating head body, there is no direct threaded connection between the connector and the fixing hole of the first coating head body, the second coating head body, or the third coating head body. Therefore, direct damage to the first coating head body, the second coating head body, or the third coating head body is reduced. Furthermore, since the first and second threaded sleeves have a first wedge cam and a second wedge cam that mesh with each other, during the threaded connection or disassembly of the connector and the first and second threaded sleeves, the first and second threaded sleeves are restricted by the meshing relationship between the wedge cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first and second threaded sleeves dislodging from the fixing hole is reduced, and the fixing reliability of the first and second threaded sleeves in the fixing hole is improved. This improves the reliability of the threaded connection between the connector and the first and second threaded sleeves, and the connection between the fastener and the first, second, and third coating head bodies is reliable.

[0037] In some embodiments, the fixing member includes an adjusting plate, and an adjusting shim is provided between the adjusting plate and the first coating head body, the second coating head body or the third coating head body. Each connector passes through a corresponding adjusting plate and adjusting shim and is threadedly connected to the first and second threaded sleeves of the corresponding threaded sleeve.

[0038] When the adjusting shim is fixed between the adjusting plate and the first coating head body, the second coating head body, or the third coating head body via the connector, it provides an outward reaction force to the threaded sleeve. Due to the interlocking action between the first and second threaded sleeves in this embodiment, neither the first nor the second threaded sleeve is easily dislodged, thus improving the fixing reliability of the first and second threaded sleeves in the fixing hole. This improves the reliability of the threaded connection between the connector and the first and second threaded sleeves, and ensures a reliable connection between the adjusting plate and the first, second, and third coating head bodies.

[0039] In a second aspect, a coating apparatus is provided, including the coating extrusion head in any of the above embodiments.

[0040] Thirdly, a battery production system is also provided, including the coating apparatus in any of the above embodiments.

[0041] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0042] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0043] Figure 1 This is a schematic diagram of the structure of a coating extrusion head according to one or more embodiments.

[0044] Figure 2 for Figure 1 A magnified schematic diagram of part A of the coating extrusion head shown.

[0045] Figure 3 for Figure 1 The diagram shows a half-section of the coating extrusion head.

[0046] Figure 4 for Figure 1 The diagram shows a front view of the threaded sleeve in the coating extrusion head.

[0047] Figure 5 for Figure 4 The diagram shows the structure of the second threaded sleeve in the threaded sleeve.

[0048] Figure 6 for Figure 4 The front view of the first threaded sleeve shown.

[0049] Figure 7 for Figure 6 The diagram shows a half-section of the first dental crown.

[0050] Figure 8 This is a schematic diagram of the structure of a coating extrusion head according to one or more other embodiments.

[0051] Figure 9 This is a schematic diagram of a coating apparatus according to one or more other embodiments.

[0052] The reference numerals in the detailed embodiments are as follows:

[0053] Coating extrusion head 100, coating head body 10, fixing hole 11, first coating head body 12, second coating head body 13, third coating head body 14, fixing member 20, base 21, adjusting plate 22, threaded sleeve 30, first sleeve 31, first wedge cam 311, disassembly groove 312, second sleeve 32, second wedge cam 321, connecting member 40, adjusting shim 50, coating device 200, coating back roller 210. Detailed Implementation

[0054] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0056] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0057] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0058] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, 1 and / or 2 can represent: 1 existing alone, 1 and 2 existing simultaneously, and 2 existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following associated objects have an "or" relationship.

[0059] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0060] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0061] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0062] In battery manufacturing processes, wet film slurry coating is mainly achieved through single-layer or double-layer extrusion heads. During the coating process, the thickness and weight of the battery electrode sheets are primarily controlled by the gap between the coating back roller and the lip of the extrusion head. However, high-speed slurry and agglomerated particles generate significant impact and friction, and residual slurry can also cause electrochemical corrosion with the extrusion head, leading to wear on the metal coating extrusion head.

[0063] To reduce wear on coating extrusion heads, related technologies have proposed using ceramic extrusion heads to extend their service life. However, this introduces new problems. These problems mainly arise during the adjustment of the lip offset of the double-layer coating extrusion head or the adjustment of the gap between the coating extrusion head and the coating back roller. Specifically, when the double-layer coating extrusion head needs lip offset adjustment, a shim is added between the lip offset adjustment back plate and the coating extrusion head. The lip offset adjustment back plate and the coating extrusion head are connected by a screw passing through the threaded hole of the lip offset adjustment back plate and the coating extrusion head. During the process of adding the shim, the axial force between the screw and the threaded hole increases. Since the coating extrusion head is made of ceramic material, the thread is prone to breakage, causing the screw and the threaded hole to loosen. Similarly, when the coating extrusion head is adjusting the gap between itself and the coating back roller, the coating extrusion head needs to move relative to the mounting base. The coating extrusion head and the mounting base are connected by a screw passing through the threaded hole of the mounting base and the coating extrusion head. Therefore, the screw needs to be loosened or tightened frequently. During this process, the threads of the coating extrusion head are prone to breakage, causing the screw and the threaded hole to loosen.

[0064] To alleviate the problem of loose fit between the screw and the threaded hole of the coating extrusion head, this application designs a coating extrusion head, including a coating head body, a fixing member, a threaded sleeve, and a connecting member. The coating head body has a fixing hole, the fixing member is disposed on one side of the coating head body, and the threaded sleeve is fixed in the fixing hole. The threaded sleeve includes a first sleeve and a second sleeve, which are arranged sequentially along the depth direction of the fixing hole. The end face of the first sleeve facing the second sleeve has a first wedge-shaped cam, and the end face of the second sleeve facing the first sleeve has a second wedge-shaped cam. The first wedge-shaped cam and the second wedge-shaped cam mesh with each other. The connecting member passes through the fixing member and is threadedly connected to the first and second sleeves to fix the fixing member to the coating head body.

[0065] Since the connector is threadedly connected to the threaded sleeve fixed in the fixing hole of the coating head body, there is no direct threaded connection between it and the fixing hole of the coating head body, thus reducing direct damage to the coating head body. Furthermore, since the first and second sleeves have a first wedge-shaped cam and a second wedge-shaped cam that mesh with each other, during the threaded connection or disassembly of the connector with the first and second sleeves, the first and second sleeves are restricted by the meshing relationship between the cams, and the two cannot easily undergo axial relative displacement. Therefore, the fixing reliability of the first and second sleeves in the fixing hole is improved, thereby improving the reliability of the threaded connection between the connector and the first and second sleeves.

[0066] The coating extrusion head of this application is used in a coating apparatus to alleviate the problem of loose thread fit between the connector and the coating head body.

[0067] The coating apparatus disclosed in this application can be used in a battery production system. The battery production system may include a slurry preparation apparatus, a coating apparatus, a rolling apparatus, a die-cutting apparatus, a winding or stacking apparatus, a casing apparatus, and a battery electrolyte injection apparatus, etc.

[0068] The system includes a slurry preparation device for mixing materials for preparing positive electrode active materials to form a positive electrode active material slurry, and a negative electrode active material slurry for mixing materials for preparing negative electrode active materials. A coating device 200 is used to coat the active material slurry onto the current collector substrate. Specifically, the positive electrode active material slurry is coated onto the positive electrode current collector substrate, and the negative electrode active material slurry is coated onto the negative electrode current collector substrate. A rolling device rolls the coated current collector substrate. The purpose of rolling is to make the active material coated on the current collector substrate bond more tightly to the current collector substrate, resulting in a more uniform thickness, thereby increasing the compaction density of the electrode sheet and improving the battery energy density. A die-cutting device cuts the current collector after rolling and forms conductive electrode tabs connecting the positive and negative electrodes, thus obtaining the positive and negative electrode sheets. A winding or stacking device combines the positive electrode sheet, negative electrode sheet, and separator together in a winding or stacking manner to form an electrode assembly. The casing assembly is used to fit the electrode assembly into the casing, ensuring physical compatibility and sealing between the electrode assembly and the casing. The electrolyte filling assembly is used to inject electrolyte into the casing.

[0069] See appendix Figures 1-5 This application provides a coating extrusion head 100, including a coating head body 10, a fixing member 20, a threaded sleeve 30, and a connector 40. The coating head body 10 has a fixing hole 11. The fixing member 20 is disposed on one side of the coating head body 10. The threaded sleeve 30 is fixed in the fixing hole 11. The threaded sleeve 30 includes a first sleeve 31 and a second sleeve 32. The first sleeve 31 and the second sleeve 32 are arranged sequentially along the depth direction of the fixing hole 11. The end face of the first sleeve 31 facing the second sleeve 32 has a first wedge-shaped cam 311, and the end face of the second sleeve 32 facing the first sleeve 31 has a second wedge-shaped cam 321. The first wedge-shaped cam 311 and the second wedge-shaped cam 321 mesh with each other. The connector 40 passes through the fixing member 20 and is threadedly connected to the first sleeve 31 and the second sleeve 32 to fix the fixing member 20 to the coating head body 10.

[0070] The coating head body 10 is the main part with coating function. Specifically, when the coating extrusion head 100 is a single-layer coating extrusion head, the coating head body 10 includes a first coating head body 12 and a second coating head body 13. A material passage for the active substance slurry is formed between the first coating head body 12 and the second coating head body 13. A lip communicating with the material passage is formed on one side of the first coating head body 12 and the second coating head body 13. When the coating extrusion head 100 is a double-layer coating extrusion head, the coating head body 10 also includes a third coating head body 14. The third coating head body 14 is adjacent to the second coating head body 13, and a material passage for the active substance slurry is formed between them. A lip communicating with the material passage is formed on one side of the third coating head body 14 and the second coating head body 13.

[0071] The fastener 20 is a component used to fix the coating head body 10. The fastener 20 can be in the form of a sheet, a block, or a base, bracket, etc.

[0072] The threaded sleeve 30 refers to a sleeve structure with internal threads. The first sleeve 31 and the second sleeve 32 are two parts that divide the threaded sleeve 30 along its axial direction; both the first sleeve 31 and the second sleeve 32 have internal threads. The first wedge cam 311 refers to a wedge-shaped cam structure, where wedge refers to a shape that is thicker at one end and thinner at the other, with a gradually narrowing cross-section. The cam structure cannot rotate but is a protrusion fixed to the end face of the first sleeve 31. Similarly, the second wedge cam 321 has a similar structure to the first wedge cam 311. The interlocking of the first wedge cam 311 and the second wedge cam 321 means that the relatively thicker part of the first wedge cam 311 engages with the relatively thinner part of the second wedge cam 321, and vice versa. In the embodiments of this application, the first sleeve 31 may have multiple first wedge cams 311, and all the first wedge cams 311 may be arranged sequentially around the axial direction of the first sleeve 31. Similarly, there can be multiple second wedge cams 321, with all first wedge cams 311 and all second wedge cams 321 corresponding to each other.

[0073] The connector 40 is a component used to connect multiple parts together. In the embodiments of this application, the connector 40 should have external threads, which correspond to and engage with the internal threads of the corresponding first toothed sleeve 31 and second toothed sleeve 32. The connector 40 passing through the fixing member 20 means that the fixing member 20 has a through hole for the connector 40 to pass through. The connector 40 can be a bolt, screw, or other connector with external threads.

[0074] Since the connector 40 is threadedly connected to the threaded sleeve 30 fixed in the fixing hole 11 of the coating head body 10, there is no direct threaded connection between the connector 40 and the fixing hole 11 of the coating head body 10. This reduces direct damage to the coating head body 10. Furthermore, since the first sleeve 31 and the second sleeve 32 have a first wedge cam 311 and a second wedge cam 321 that mesh with each other, during the threaded connection or disassembly of the connector 40 with the first sleeve 31 and the second sleeve 32, the first sleeve 31 and the second sleeve 32 are restricted by the meshing relationship between the wedge cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first sleeve 31 and the second sleeve 32 disengaging from the fixing hole 11 is reduced, and the fixing reliability of the first sleeve 31 and the second sleeve 32 in the fixing hole 11 is improved. This improves the reliability of the threaded connection between the connector 40 and the first sleeve 31 and the second sleeve 32, making the connection between the fixing member 20 and the coating head body 10 reliable.

[0075] Please see Figure 4 and Figure 5 Specifically, in the embodiments of this application, the first wedge cam 311 includes multiple first wedge cams 311, all of which are arranged around the axis of the first dental sleeve 31. The second wedge cam 321 includes multiple second wedge cams 321, all of which are arranged to heat the axis of the second dental sleeve 32. All first wedge cams 311 and all second wedge cams 321 are in one-to-one correspondence and cooperation.

[0076] Thus, since multiple first wedge cams 311 correspond one-to-one with each other to achieve mutual engagement, the risk of the first toothed sleeve 31 and the second toothed sleeve 32 disengaging from the fixing hole 11 is further reduced, and the fixing reliability of the first toothed sleeve 31 and the second toothed sleeve 32 in the fixing hole 11 is improved, thereby improving the reliability of the threaded connection between the connector 40 and the first toothed sleeve 31 and the second toothed sleeve 32.

[0077] According to some embodiments of this application, the cross-sectional shapes of the first wedge cam 311 and the second wedge cam 321 are triangular.

[0078] The triangular structure is more stable, and when the first wedge cam 311 and the second wedge cam 321 mesh with each other, the mating surfaces between them have higher precision, the constraint force between them is greater, and a greater biting force can be generated, enhancing the connection strength between them. When the first and second toothed brackets 31 and 32 are subjected to external forces, this triangular cross-sectional shape can more effectively resist the tendency to separate, thereby further consolidating their position in the fixing hole 11. In addition, the triangular cross-sectional shape is easier to process and manufacture, reducing production costs and improving the precision and reliability of the components.

[0079] According to some embodiments of this application, the space between the first dental brace 31 and the second dental brace 32 and the inner wall of the fixing hole 11 is filled with a fixing adhesive.

[0080] The fixing adhesive is a type of adhesive used to fix the first dental sleeve 31 and the second dental sleeve 32 in the fixing hole 11. After the fixing adhesive is cured, it can improve the connection strength between the first dental sleeve 31 and the second dental sleeve 32 and the inner wall of the fixing hole 11, making it less likely for the first dental sleeve 31 and the second dental sleeve 32 to loosen or fall off.

[0081] Optionally, the fixing adhesive can be an epoxy resin adhesive, instant adhesive, anaerobic adhesive, or other colloid with high strength and good curing properties. In use, the fixing adhesive can be evenly applied to the outer walls of the first threaded sleeve 31 and the second threaded sleeve 32, or to the inner wall of the fixing hole 11. Then, the first threaded sleeve 31 and the second threaded sleeve 32 are sequentially installed into the fixing hole 11. After the fixing adhesive cures, the threaded sleeve 30 is fixed.

[0082] See Figure 6 and Figure 7 According to some embodiments of this application, the outer peripheral surface of the first dental sleeve 31 has a first external thread, and the first dental sleeve 31 is threadedly connected to the inner wall of the fixing hole 11 through the first external thread.

[0083] Thus, when the space between the first dental sleeve 31 and the inner wall of the fixing hole 11 is filled with fixing adhesive, the outer peripheral surface of the first dental sleeve 31 has a first external thread, and is threadedly connected to the inner wall of the fixing hole 11 through the first external thread. Therefore, the contact area between the first dental sleeve 31 and the fixing hole 11 can be increased, and the connection strength between the first dental sleeve 31 and the inner wall of the fixing hole 11 can be further improved, making the first dental sleeve 31 less likely to loosen or fall off.

[0084] Similarly, the outer peripheral surface of the second dental sleeve 32 also has a second external thread, and the first dental sleeve 31 is threadedly connected to the inner wall of the fixing hole 11 through the first external thread.

[0085] Thus, when the space between the second dental sleeve 32 and the inner wall of the fixing hole 11 is filled with fixing adhesive, the outer peripheral surface of the second dental sleeve 32 has a second external thread, and is threadedly connected to the inner wall of the fixing hole 11 through the second external thread. Therefore, the contact area between the second dental sleeve 32 and the fixing hole 11 is increased, and the connection strength between the second dental sleeve 32 and the inner wall of the fixing hole 11 is further improved, making the second dental sleeve 32 less likely to loosen or fall off.

[0086] Furthermore, the direction of the first external thread is opposite to the direction of the internal thread of the first toothed sleeve 31.

[0087] In other words, when the first external thread rotates clockwise, the internal thread of the first toothed sleeve 31 rotates counterclockwise; when the internal thread of the first toothed sleeve 31 rotates clockwise, the external thread rotates counterclockwise.

[0088] Thus, when the connector 40 is screwed outward to disassemble from the first toothed sleeve 31, since the direction of the first external thread is opposite to the direction of the internal thread of the first toothed sleeve 31, the force on the outer circumferential surface of the first toothed sleeve 31 is opposite to the force of the outward screwing. The first toothed sleeve 31 is less likely to come out, reducing the risk of the first toothed sleeve 31 loosening or falling off during the disassembly process.

[0089] Similarly, the direction of the second external thread is opposite to the direction of the internal thread of the second toothed sleeve 31.

[0090] Thus, when the connector 40 is screwed outward to disassemble from the second threaded sleeve 31, since the direction of the second external thread is opposite to the direction of the internal thread of the second threaded sleeve 32, the force on the outer circumferential surface of the second threaded sleeve 32 is opposite to the force of the outward screwing. The second threaded sleeve 32 is less likely to come off, reducing the risk of the second threaded sleeve 32 loosening or falling off during the disassembly process.

[0091] Combination Figure 4 According to some embodiments of this application, one end of the fixing hole 11 forms an inlet on the coating head body 10, the first dental sleeve 31 is positioned closer to the inlet than the second dental sleeve 32, and the end face of the first dental sleeve 31 away from the second dental sleeve 32 is provided with a disassembly groove 312.

[0092] The removal slot 312 is designed to allow users to apply force to the first dental sleeve 31 by inserting a tool into the removal slot 312. Since the first dental sleeve 31 and the second dental sleeve 32 are interlocked, the first dental sleeve 31 and the second dental sleeve 32 can be screwed out from the fixing hole 11 together, which makes it easy to remove or replace the first dental sleeve 31.

[0093] Furthermore, the shape of the disassembly groove 312 can be hexagonal, straight, cross-shaped, etc.

[0094] This design allows for easy adaptation to tools of different shapes for disassembly operations. Furthermore, this shape not only improves the ease of disassembly but also enhances the stability and reliability of the disassembly process.

[0095] See Figure 3 According to some embodiments of this application, the fixing member 20 includes a base 21, and the coating head body 10 is fixed to the base 21 by a connector 40.

[0096] During the gap adjustment between the coating head body 10 and the coating back roller 210, the coating head body 10 will move relative to the base 21. At this time, the connector 40 needs to be disassembled. After the adjustment is completed, the connector 40 needs to be installed so that the coating head body 10 is fixed to the base 21 by the connector 40.

[0097] Therefore, in this embodiment, since the connector 40 is threadedly connected to the threaded sleeve 30 fixed in the fixing hole 11 of the coating head body 10, there is no direct threaded connection between the connector 40 and the fixing hole 11 of the coating head body 10, thus reducing direct damage to the coating head body 10. Furthermore, since the first sleeve 31 and the second sleeve 32 have a first wedge cam 311 and a second wedge cam 321 that mesh with each other, during the threaded connection or disassembly of the connector 40 with the first sleeve 31 and the second sleeve 32, the first sleeve 31 and the second sleeve 32 are restricted by the meshing relationship between the wedge cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first sleeve 31 and the second sleeve 32 disengaging from the fixing hole 11 is reduced, and the fixing reliability of the first sleeve 31 and the second sleeve 32 in the fixing hole 11 is improved, thereby improving the reliability of the threaded connection between the connector 40 and the first sleeve 31 and the second sleeve 32, and the connection between the base 21 and the coating head body 10 is reliable.

[0098] In other embodiments of this application, the coating head body 10 includes a first coating head body 12 and a second coating head body 13, with a material passage gap formed between the first coating head body 12 and the second coating head body 13. Both the first coating head body 12 and the second coating head body 13 have at least one fixing hole 11. The threaded sleeve 30 includes at least two, with each threaded sleeve 30 fixed in a corresponding fixing hole 11. The connector 40 includes at least two, with each connector 40 threadedly connected to the first sleeve 31 and the second sleeve 32 of the corresponding threaded sleeve 30 through a corresponding fixing member 20.

[0099] In other words, when the first coating head body 12 and the second coating head body 13 need to be fixed together, or when the first coating head body 12 or the second coating head body 13 needs to be replaced or adjusted and needs to be disassembled or moved relative to each other, the connector 40 needs to be installed or removed so that the first coating head body 12 or the second coating head body 13 can be fixed or removed from the fastener 20.

[0100] Therefore, in this embodiment, since the connector 40 is threadedly connected to the threaded sleeve 30 fixed in the fixing hole 11 of the first coating head body 12 or the second coating head body 13, there is no direct threaded connection between the connector 40 and the fixing hole 11 of the first coating head body 12 or the second coating head body 13. This reduces direct damage to the first coating head body 12 or the second coating head body 13. Furthermore, since the first sleeve 31 and the second sleeve 32 have a first wedge-shaped cam 311 and a second wedge-shaped cam 321 that mesh with each other, the connector 40 and the first... During the threaded connection or disassembly of the first and second sleeves 31 and 32, the first and second sleeves 31 and 32 are constrained by the meshing relationship between the wedge-shaped cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first and second sleeves 31 and 32 disengaging from the fixing hole 11 is reduced, and the fixing reliability of the first and second sleeves 31 and 32 in the fixing hole 11 is improved. This improves the reliability of the threaded connection between the connector 40 and the first and second sleeves 31 and 32, and the connection between the fixing member 20 and the first coating head body 12 and the second coating head body 13 is reliable.

[0101] See Figure 8 In some other embodiments, the coating head body 10 includes a first coating head body 12, a second coating head body 13, and a third coating head body 14. Material passage gaps are formed between the first coating head body 12 and the second coating head body 13, and between the second coating head body 13 and the third coating head body 14. The fixing members 20 include at least two, wherein at least one fixing member 20 is used to fix the first coating head body 12 and the second coating head body 13, and the remaining fixing members 20 are used to fix the second coating head body 13 and the third coating head body 14. The first coating head body 12, the second coating head body 13, and the third coating head body 14 each have at least one fixing hole. The threaded sleeves 30 include at least four, and each threaded sleeve 30 is fixed in a corresponding fixing hole 11. The connecting members 40 include at least four, and each connecting member 40 passes through a corresponding fixing member 20 and is threadedly connected to the first sleeve 31 and the second sleeve 31 of the corresponding threaded sleeve 30.

[0102] When the first coating head body 12 and the second coating head body 13 need to be fixed together, or when the first coating head body 12 or the second coating head body 13 needs to be replaced or adjusted and therefore needs to be disassembled or moved relative to each other, the corresponding connecting piece 40 needs to be installed or removed to fix or disassemble the first coating head body 12 or the second coating head body 13 with the fixing piece 20. Similarly, when the second coating head body 13 and the third coating head body 14 need to be fixed together, or when the second coating head body 13 or the third coating head body 14 needs to be replaced or adjusted and therefore needs to be disassembled or moved relative to each other, the corresponding connecting piece 40 needs to be installed or removed to fix or disassemble the second coating head body 13 or the third coating head body 14 with the fixing piece 20.

[0103] Therefore, in this embodiment, since the connector 40 is threadedly connected to the threaded sleeve 30 fixed in the fixing hole 11 of the first coating head body 12, the second coating head body 13, or the third coating head body 14, there is no direct threaded connection between the connector 40 and the fixing hole 11 of the first coating head body 12, the second coating head body 13, or the third coating head body 14. This reduces direct damage to the first coating head body 12, the second coating head body 13, or the third coating head body 14. Furthermore, since the first sleeve 31 and the second sleeve 32 have a mutually engaging first wedge-shaped cam 311 and a second wedge-shaped cam 32, 21. During the threaded connection or disassembly of the connector 40 with the first toothed sleeve 31 and the second toothed sleeve 32, the first toothed sleeve 31 and the second toothed sleeve 32 are restricted by the meshing relationship between the wedge-shaped cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first toothed sleeve 31 and the second toothed sleeve 32 disengaging from the fixing hole 11 is reduced, and the fixing reliability of the first toothed sleeve 31 and the second toothed sleeve 32 in the fixing hole 11 is improved. This improves the reliability of the threaded connection between the connector 40 and the first toothed sleeve 31 and the second toothed sleeve 32, and the connection between the fixing member 20 and the first coating head body 12, the second coating head body 13 and the third coating head body 14 is reliable.

[0104] Combination Figure 2 Specifically, in the embodiments of this application, the fixing member 20 includes an adjusting plate 22, and an adjusting shim 50 is provided between the adjusting plate 22 and the first coating head body 12, the second coating head body 13 or the third coating head body 14. Each connecting member 40 passes through a corresponding adjusting plate 22 and adjusting shim 50 and is threadedly connected to the first threaded sleeve 31 and the second threaded sleeve 32 of the corresponding threaded sleeve 30.

[0105] When the fixing component 20 includes the adjusting plate 22, the parameters such as the lip position, opening degree, and parallelism of the first coating head body 12 and the second coating head body 13, or the second coating head body 13 and the third coating head body 14 can be adjusted by replacing the adjusting shim 50 between the adjusting plate 22 and the first coating head body 12, the second coating head body 13, or the third coating head body 14.

[0106] When the adjusting shim 50 is fixed between the adjusting plate 22 and the first coating head body 12, the second coating head body 13, or the third coating head body 14 via the connector 40, it will provide an outward reaction force to the threaded sleeve 30. Due to the interlocking action between the first sleeve 31 and the second sleeve 32 in this embodiment, the first sleeve 31 and the second sleeve 32 are not easy to come out, which improves the fixing reliability of the first sleeve 31 and the second sleeve 32 in the fixing hole 11, thereby improving the reliability of the threaded connection between the connector 40 and the first sleeve 31 and the second sleeve 32, and the connection between the adjusting plate 22 and the first coating head body 12, the second coating head body 13, and the third coating head body 14 is reliable.

[0107] Specifically, the adjustment plate 22 is located on the side of the first coating head body 12 and the second coating head body 13 facing away from the lip formed by them, and the adjustment plate 22 is located on the side of the second coating head body 13 and the third coating head body 14 facing away from the lip formed by them.

[0108] See Figures 1-5 and Figure 9 According to some embodiments of this application, this application also provides a coating apparatus 200, which includes the coating extrusion head 100 in any of the above embodiments.

[0109] Since the connector 40 is threadedly connected to the threaded sleeve 30 fixed in the fixing hole 11 of the coating head body 10, there is no direct threaded connection between the connector 40 and the fixing hole 11 of the coating head body 10. This reduces direct damage to the coating head body 10. Furthermore, since the first sleeve 31 and the second sleeve 32 have a first wedge cam 311 and a second wedge cam 321 that mesh with each other, during the threaded connection or disassembly of the connector 40 with the first sleeve 31 and the second sleeve 32, the first sleeve 31 and the second sleeve 32 are restricted by the meshing relationship between the wedge cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first sleeve 31 and the second sleeve 32 disengaging from the fixing hole 11 is reduced, and the fixing reliability of the first sleeve 31 and the second sleeve 32 in the fixing hole 11 is improved. This improves the reliability of the threaded connection between the connector 40 and the first sleeve 31 and the second sleeve 32, making the connection between the fixing member 20 and the coating head body 10 reliable.

[0110] Specifically, the coating apparatus 200 also includes a coating back roller 210. One side of the coating head body 10 has a lip, and the coating back roller 210 is adjacent to the lip, forming a coating gap between them. The coating back roller 210 is rotatable about a rotating shaft, which is parallel to the extending direction of the lip.

[0111] The coating back roller 210 is a roller body used to support the substrate and cooperate with the coating head body 10 to form a coating gap.

[0112] In this way, the active substance slurry can be squeezed into the coating gap through the lip of the coating head body 10, thereby coating the substrate with the active substance slurry.

[0113] According to some embodiments of this application, this application also provides a battery production system, including the coating apparatus 200 in any of the above embodiments.

[0114] Since the connector 40 is threadedly connected to the threaded sleeve 30 fixed in the fixing hole 11 of the coating head body 10, there is no direct threaded connection between the connector 40 and the fixing hole 11 of the coating head body 10. This reduces direct damage to the coating head body 10. Furthermore, since the first sleeve 31 and the second sleeve 32 have a first wedge cam 311 and a second wedge cam 321 that mesh with each other, during the threaded connection or disassembly of the connector 40 with the first sleeve 31 and the second sleeve 32, the first sleeve 31 and the second sleeve 32 are restricted by the meshing relationship between the wedge cams, and the two cannot easily undergo axial relative displacement. Therefore, the risk of the first sleeve 31 and the second sleeve 32 disengaging from the fixing hole 11 is reduced, and the fixing reliability of the first sleeve 31 and the second sleeve 32 in the fixing hole 11 is improved. This improves the reliability of the threaded connection between the connector 40 and the first sleeve 31 and the second sleeve 32, making the connection between the fixing member 20 and the coating head body 10 reliable.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A coating extrusion head characterized by, include: The coating head body has a fixing hole; A fixing element is provided on one side of the coating head body; A threaded bushing, fixed within the fixing hole, comprises a first bushing and a second bushing, the first bushing and the second bushing being sequentially arranged along the depth direction of the fixing hole. The end face of the first bushing facing the second bushing has a first wedge-shaped cam, and the end face of the second bushing facing the first bushing has a second wedge-shaped cam. The first wedge-shaped cam and the second wedge-shaped cam engage with each other. A connector is inserted through the fixing member and threadedly connected to the first and second dental sleeves to fix the fixing member to the coating head body.

2. The coating extrusion head of claim 1, wherein, The first wedge-shaped cam includes multiple cams, all of which are arranged around the axis of the first dental brace; the second wedge-shaped cam includes multiple cams, all of which are arranged around the axis of the second dental brace. All of the first wedge cams are matched one-to-one with all of the second wedge cams.

3. The coating extrusion head according to any one of claims 1 or 2, characterized in that Both the first wedge cam and the second wedge cam have triangular cross-sectional shapes.

4. The coating extrusion head according to any one of claims 1 or 2, characterized in that The space between the first and second dental braces and the inner wall of the fixing hole is filled with fixing adhesive.

5. The coating extrusion head of claim 4, wherein, The outer peripheral surface of the first dental cuff has a first external thread, and the first dental cuff is threadedly connected to the inner wall of the fixing hole through the first external thread; and / or The outer peripheral surface of the second dental sleeve has a second external thread, and the second dental sleeve is threadedly connected to the inner wall of the fixing hole through the second external thread.

6. The coating extrusion die of claim 5, wherein, The direction of rotation of the first external thread is opposite to the direction of rotation of the internal thread of the first toothed sleeve; and / or The direction of the second external thread is opposite to the direction of the internal thread of the second toothed sleeve.

7. The coating extrusion head according to claim 1, characterized in that, One end of the fixing hole forms an inlet on the coating head body. The first dental sleeve is positioned closer to the inlet than the second dental sleeve. The end face of the first dental sleeve away from the second dental sleeve is provided with a disassembly groove.

8. The coating extrusion die of claim 7, wherein, The disassembly groove is hexagonal, straight, or cross-shaped.

9. The coating extrusion die of claim 1 wherein, The fixing component includes a base, and the coating head body is fixed to the base via the connector.

10. The coating extrusion die of claim 1 wherein, The coating head body includes a first coating head body and a second coating head body, and a material passage gap is formed between the first coating head body and the second coating head body; Both the first coating head body and the second coating head body have at least one fixing hole. The threaded sleeve includes at least two, each threaded sleeve being fixed in a corresponding fixing hole. The connector includes at least two, each connector passing through a corresponding fixing member and threadedly connected to the first and second sleeves of the corresponding threaded sleeve.

11. The coating extrusion die of claim 10 wherein, The fixing component includes an adjusting plate, and an adjusting shim is provided between the adjusting plate and the first coating head body or the second coating head body. Each of the connecting components passes through a corresponding adjusting plate and the adjusting shim and is threadedly connected to the first and second threaded sleeves of the corresponding threaded sleeve.

12. The coating extrusion die of claim 1 wherein, The coating head body includes a first coating head body, a second coating head body, and a third coating head body, with material passage gaps formed between the first coating head body and the second coating head body, and between the second coating head body and the third coating head body. The fasteners include at least two, wherein at least one of the fasteners is used to fasten the first coating head body and the second coating head body, and the remaining fasteners are used to fasten the second coating head body and the third coating head body; The first coating head body, the second coating head body, and the third coating head body each have at least one fixing hole. The threaded sleeves include at least four, each threaded sleeve being fixed in a corresponding fixing hole. The connectors include at least four, each connector passing through a corresponding fixing member and threadedly connected to the first and second sleeves of the corresponding threaded sleeve.

13. The coating extrusion die of claim 12, wherein, The fixing component includes an adjusting plate, and an adjusting shim is provided between the adjusting plate and the third coating head body. Each of the connecting components passes through a corresponding adjusting plate and adjusting shim and is threadedly connected to the first and second threaded sleeves of the corresponding threaded sleeve.

14. A coating apparatus characterized by comprising: Includes the coating extrusion head as described in any one of claims 1 to 13.

15. A battery production system characterized by comprising: Includes the coating apparatus as described in claim 14.

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